Yaskawa Error Code A910 〈Linux〉

Sal’s voice crackled one last time. “A910. Just a loose wire.”

Poor contact or incorrect wiring between the servomotor and the encoder can trigger false or early warnings.

In many cases, the cost of repair (especially for drives under 7.5kW) approaches the cost of a new drive. Yaskawa’s flat-rate repair service or an authorized repair center (e.g., Drives Warehouse, Radwell, or Yaskawa direct) is the recommended route for hardware failure.

Disconnect the motor from the load (machine mechanism) and run the motor in a free-run state.

In older drives, degraded power supply capacitors can introduce noise or incorrect biasing voltages into the current detection circuit. This leads to a false current offset reading. yaskawa error code a910

If the cooling fan is physically jammed by debris, thick dust, or grease common in harsh industrial environments, its RPMs will drop. The drive senses this drop in current or speed and throws the A910 alarm to prevent the heatsink from actually overheating and damaging the IGBT modules. 3. High Ambient Temperature / Clogged Heatsink

Common causes:

If the air filters on your electrical enclosure are clogged, or if the drive's internal heatsink fins are blanketed in dust, the drive cannot dissipate heat effectively. Even if the fan is spinning, the restricted airflow can trigger a pre-overheat alarm categorized under the A910 umbrella. Step-by-Step Guide to Fix Error Code A910

Follow these sequential steps to diagnose and clear the A910 error code from your Yaskawa digital operator. Step 1: Verify Motor Nameplate Data Sal’s voice crackled one last time

Unlike a fault code, an alarm or warning like A910 does not always stop the motor immediately. However, it prevents the system from executing specific functions, such as auto-tuning or advanced positioning. Understanding the root causes of this error allows you to resolve it quickly and minimize system downtime. Primary Causes of Error Code A910

It occurs when the motor operation exceeds the overload protection characteristics defined in the drive's parameters. Primary Causes Mechanical Load Issues:

Gently spin the fan blades with a non-conductive tool. The blade should rotate freely without resistance or grinding noises. If it feels stiff or gritty, the bearings are shot. Step 2: Clean the Cooling Assembly

Unlike a simple overvoltage or overload fault, A910 points to a hardware or calibration issue. Understanding the root cause is essential for efficient troubleshooting. In many cases, the cost of repair (especially

If the code immediately returns, the drive's internal diagnostic system is still detecting an improper fan current or RPM drop, indicating that the fan unit must be replaced. 5. Replacing a Yaskawa Cooling Fan

: The fault reset command will be ignored if a Run command is still active. Always make sure the Run command is OFF before attempting to reset.